A 20-to-75 dB Gain 5-dB Noise Figure Broadband 60-GHz Receiver with Digital Calibration

This work presents a broadband 60-GHz heterodyne receiver with digital calibration. In the LNA, low-coupling-coefficient transformer based matching networks are employed to improve its RF bandwidth. Digital gain control and phase tuning schemes are used for the receiver gain tuning and I/Q mismatch calibration. Measurement results show that the conversion gains of 75 dB (the high-gain mode) and 20 dB (the low-gain mode) are achieved. In the high-gain mode, the measured average noise figure is about 5 dB. Moreover, in the single-channel (i.e. 1.76 GHz RF bandwidth) and two-channel bonding (i.e. 3.52 GHz) measurements, the receiver achieves good in-band gain flatness performance. Fabricated in a 65 nm CMOS, the receiver occupies a silicon area of 1.9 mm x 0.7 mm (including all the pads) and consumes 142 mW dc power from a 1.2 V supply.